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Finding the Fourth Proportional to 141,989.52, 213,131.70 and 104,591.64

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Solution

The fourth proportional to 141,989.52, 213,131.70 and 104,591.64 is: 156,996.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,989.52 : 213,131.70 = 104,591.64 : x
  2. Step 2: Convert to fraction form
    141,989.52/213,131.70 = 104,591.64/x
  3. Step 3: Cross multiply
    141,989.52x = 213,131.70 × 104,591.64
  4. Step 4: Simplify right side
    141,989.52x = 22,291,794,038.99
  5. Step 5: Solve for x
    x = 22,291,794,038.99/141,989.52
  6. Step 6: Final answer
    x = 156,996.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.